You not only misspelled 4ringsnbr's screen name but also shortchanged his number by half. But that is okay, as 4rings deserves only half credit for that answer about VZW Cellular 850 MHz primacy. It is a generalization that does not really hold true across multiple markets.
4rings lives in a market where VZW originally was PCS 1900 MHz only, then acquired a Cellular 850 MHz license through the Alltel buyout. So, that, in and of itself, is a bit wonky.
My market, Kansas City, is a more typical VZW market. VZW originally was Cellular 850 MHz only but acquired a PCS 1900 MHz license about a decade ago. When VZW initially deployed EV-DO, it was EV-DO 1900 only. In most VZW markets like KC, that was the standard -- CDMA1X 850 + EV-DO 1900. In fact, many markets where VZW held no PCS 1900 MHz spectrum, such as Wichita, were late to EV-DO deployment, as VZW rarely deployed EV-DO 850.
In more recent years, however, the AMPS sunset and the deployment of additional carriers has enabled VZW to add some EV-DO 850. In KC, for example, EV-DO is now a mix of EV-DO 1900 and EV-DO 850.
AJ